CN203169742U - Novel safety syringe - Google Patents
Novel safety syringe Download PDFInfo
- Publication number
- CN203169742U CN203169742U CN 201320220218 CN201320220218U CN203169742U CN 203169742 U CN203169742 U CN 203169742U CN 201320220218 CN201320220218 CN 201320220218 CN 201320220218 U CN201320220218 U CN 201320220218U CN 203169742 U CN203169742 U CN 203169742U
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- CN
- China
- Prior art keywords
- elastic supporting
- supporting seat
- connecting hole
- core bar
- syringe
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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Abstract
The utility model discloses a novel safety syringe which comprises a needle cylinder, a needle base and a core pin. The needle base is located at the front end of an inner hole of the needle cylinder through an elastic supporting base, a large-diameter connecting hole is formed in the lower portion of the inner hole of the needle base, and the bottom of the connecting hole protrudes inwards to form a clamping flange. The head of the elastic supporting base protrudes outwards to form a connecting flange, the connecting flange is clamped in the clamping flange at the bottom of the connecting hole of the needle base in an interference fit mode, and an outer wall of the needle base is expanded to be connected with a clamping groove on the needle cylinder in a clamping mode. The tail of the elastic supporting base is unfolded to form an umbrella-shaped body connected with a needle cylinder inner hole in a sealing and matched mode. By means of the safety syringe, the problem that the syringe is damaged due to misoperation is solved, and operation is facilitated. Meanwhile, an O-shaped ring for sealing is omitted, accessories are reduced, assembling steps are simplified, assembling efficiency of the syringe can be improved to some extent, and production cost is reduced.
Description
Technical field
This utility model relates to a kind of syringe, specifically is a kind of novel safety injector.
Background technology
For avoiding cross infection and be convenient to the processing of later stage garbage, the application of disposible safety syringe in medical institutions is very extensive.
At present, disposible safety syringe type on the market is a lot, but more or less there is following problem: self-destruction just takes place when 1, core bar is shifted 0 liquid level line onto, this structural design makes in the drawing liquid process must careful operation, must be apart from 0 bit line, one segment distance when promoting core bar forward, but in practical operation, be easy to because grasping the bad self-destruction in advance that causes; Core bar can not be shifted 0 liquid level line fully onto during 2, because of drawing liquid, causes the air ratio reserved in the syringe more, in the drawing liquid process, need repeatedly carry out the operation of emptying gas, brought very big inconvenience for actual the use; 3, be provided with " O " type circle for sealing between the needle stand of existing syringe and the syringe, the many and assembling trouble of accessory, human cost compares higher.
The utility model content
At the problems referred to above, this utility model provides a kind of novel safety injector, can thoroughly solve the syringe that causes because of maloperation and shift to an earlier date the self-destruction problem, made things convenient for operation, remove " O " type circle of sealing usefulness simultaneously, reduced accessory, simplified installation step, can promote the efficiency of assembling of syringe to a certain extent, reduce production costs.
For achieving the above object, this utility model is by the following technical solutions:
A kind of novel safety injector, comprise syringe, needle stand and core bar, it is characterized in that: described needle stand is positioned at the endoporus front end of syringe by an elastic supporting seat, and the endoporus bottom of needle stand is provided with wide-aperture connecting hole, and connecting hole convexes into a snap flange in the bottom; The head evagination of described elastic supporting seat forms a flange connector, flange connector snap in the snap flange of needle stand connecting hole bottom in interference tight fit mode and make needle stand the outer wall expansion and with syringe on the draw-in groove engagement connection; The afterbody abduction of elastic supporting seat forms a umbrella body and is sealed and matched with the syringe endoporus and is connected.
Further, above-mentioned elastic supporting seat center is provided with the grab connecting hole of up/down perforation, the grab length that the degree of depth of grab connecting hole is stretched out greater than the core bar head under the original state, the plug on the described core bar or core bar head can be with pushing away before the core bar and elastic supporting seat crimp is shortened and made the grab of core bar head pass whole grab connecting hole and engage with the top of elastic supporting seat.
Further, the downside of above-mentioned elastic supporting seat umbrella body is 0 liquid level face, and this 0 liquid level face matches with the plug front end face of core bar or the front end face of core bar head.
Further, the external diameter of the flange connector of above-mentioned elastic supporting seat is less than the internal diameter of needle stand connecting hole, and the height of flange connector is not more than the length of connecting hole.
Further, the outer wall of above-mentioned elastic supporting seat or grab connecting hole inwall or above two positions are provided with some gap slots that can increase the elastic supporting seat deflection simultaneously.
When assembling, at first needle stand is installed into syringe and shifts syringe endoporus head always onto from the syringe afterbody, elastic supporting seat then is installed, and the flange connector that makes the elastic supporting seat head snaps in the snap flange of needle stand connecting hole bottom, thereby make the outer wall expansion of needle stand and fasten with draw-in groove on the syringe, realize the effective location of needle stand on syringe.Afterwards core bar is installed into the assembling that syringe is namely finished syringe.
After assembling, the downside shape 0 liquid level face of elastic supporting seat umbrella body, this 0 liquid level face matches with the plug front end face of core bar or the front end face of core bar head, stretch out the grab length of plug greater than the core bar head because of the elastic supporting seat center grab connecting hole degree of depth, in the drawing liquid operation, the 0 liquid level face of shifting onto before fully can the plug with core bar touches and does not push elastic supporting seat, the air surplus that keep in the syringe this moment seldom, the grab of core bar is also in the grab connecting hole of elastic supporting seat, core bar and elastic supporting seat are not realized engaging, fundamentally stop the self-destruction in advance of syringe, also for the drawing liquid operation provides convenience, reduced the operation that effluxes air simultaneously.
In above syringe construction, needle stand is to utilize the elastic characteristic of elastic supporting seat itself to realize with the sealing that is connected of syringe, respectively by the sealing of flange connector and needle stand connecting hole bottom snap flange and the sealing of elastic supporting seat umbrella body periphery and syringe endoporus, whole syringe has been removed " O " type coil structures, reduced accessory, simplified installation step, can promote the efficiency of assembling of syringe to a certain extent, reduced production costs.
Description of drawings
Fig. 1, combination sketch map of the present utility model;
The structural representation of Fig. 2, this utility model syringe;
The structural representation of Fig. 3, this utility model needle stand;
The structural representation of Fig. 4, this utility model core bar;
The structural representation of Fig. 5, this utility model elastic supporting seat;
Fig. 6, the structural representation of this utility model when drawing liquid;
Fig. 7, this utility model structural representation after injection finishes;
Fig. 8, this utility model elastic supporting seat flange connector enter the structural representation of needle stand connecting hole;
The structural representation that Fig. 9, this utility model core bar head grab engage with the elastic supporting seat top;
Structural representation after Figure 10, this utility model elastic supporting seat and needle stand bounce back together;
Second kind of embodiment of Figure 11, this utility model core bar;
The structural representation of Figure 12, this utility model elastic supporting seat band gap slot.
The specific embodiment
As shown in Figure 1, a kind of novel safety injector comprises syringe 1, needle stand 2 and core bar 3.
As shown in Figure 2, endoporus 11 front ends of described syringe 1 are provided with the draw-in groove 111 of location needle stand, and the top of endoporus 11 is provided with the smaller needle stand spacing hole 12 in an aperture.
As shown in Figure 3, described needle stand 2 tops are Rule conical structure, needle stand 2 bottoms be one with syringe endoporus 11 matched cylindrical structures.The aperture on the endoporus top of needle stand 2 is very little, and for being used for settling the needle point installing hole 21 of needle point, the endoporus bottom of needle stand 2 is provided with wide-aperture connecting hole 22, convexes into a snap flange 221 in connecting hole 22 bottoms.Whole needle stand 2 is positioned at by an elastic supporting seat 4 on the draw-in groove 111 of endoporus 11 front ends of syringe 1.
As shown in Figure 4, the head 31 of core bar 3 is equipped with a plug 32 and can offsets with the lower surface of elastic supporting seat 4, and core bar head 31 is provided with the grab 33 that stretches out a segment distance simultaneously.In addition, core bar 3 structures also can be arranged to structure as shown in figure 11, and the head 31 of core bar 3 is relatively big, the front end face 311 of core bar head 31 can be directly and the lower surface of elastic supporting seat 4 offset.
As shown in Figure 5, the head evagination of described elastic supporting seat 4 forms a flange connector 41, flange connector 41 snap in the snap flange 221 of needle stand connecting hole 22 bottoms in interference tight fit mode and make needle stand 2 the outer wall expansion and with syringe 1 on draw-in groove 111 engagement connections, at this, for making things convenient for snapping in of flange connector 41, the downside of snap flange 221 is provided with circular arc chamfering 2211 on the described needle stand.The afterbody abduction of described elastic supporting seat 4 forms a umbrella body 42 and is sealed and matched with syringe endoporus 11 and is connected.
At this, try hard to recommend action outside with breaking away from fully with snap flange 221 down and can snapping onto smoothly in the connecting hole 22 of needle stand 2 for guaranteeing flange connector 41, the external diameter of described elastic supporting seat flange connector 41 is less than the internal diameter of needle stand connecting hole 22, and the height of flange connector 41 is not more than the length of connecting hole 22.
Described elastic supporting seat 4 centers are provided with the grab connecting hole 43 of up/down perforation, grab 33 length that the degree of depth of grab connecting hole 43 is stretched out plug 32 or core bar head 31 greater than core bar head 31 under the original state, the plug 32 on the described core bar 3 or core bar head 31 can be with pushing away before the core bar 3 and elastic supporting seat 4 crimps are shortened and made the grab 33 of core bar 3 heads pass whole grab connecting hole 43 and engage with the top of elastic supporting seat 4.At this, for strengthening the deformability of elastic supporting seat 4, the thrust of core bar 3 when alleviating self-destruction, the outer wall of described elastic supporting seat 4 or grab connecting hole 43 inwalls or above two positions are provided with some gap slots 44 that can increase elastic supporting seat 4 deflections simultaneously, as shown in figure 12, the inwall that is the outer wall of elastic supporting seat 4 and grab connecting hole 43 arranges the structural representation of gap slot 43 simultaneously.
When assembling, at first needle stand 2 is installed into syringe and shifts syringe endoporus 11 heads always onto from syringe 1 afterbody, elastic supporting seat 4 then is installed, and the flange connector 41 that makes elastic supporting seat 4 heads snaps in the snap flange 221 of needle stand connecting hole 22 bottoms, thereby make the outer wall expansion of needle stand 2 and fasten with draw-in groove 111 on the syringe 1, realize the effective location of needle stand 2 on syringe 1.Afterwards core bar 3 is installed into the assembling that syringe 1 is namely finished syringe.
After assembling, the downside of elastic supporting seat umbrella body 42 is 0 liquid level face, this 0 liquid level face matches with plug 32 front end faces of core bar 3 or the front end face of core bar head 31, stretch out grab 43 length of plug 42 greater than core bar head 31 because of elastic supporting seat center grab connecting hole 43 degree of depth, in the drawing liquid operation, the 0 liquid level face of shifting onto before fully can head 31 front end faces with the plug 32 of core bar 3 or core bar touches and does not push elastic supporting seat 4, the air surplus that keep in the syringe 1 this moment seldom, the grab 33 of core bar 3 is also in the grab connecting hole 43 of elastic supporting seat 4, core bar 3 and elastic supporting seat 4 are not realized engaging, fundamentally stopped the self-destruction in advance of syringe, also for the drawing liquid operation provides convenience, reduce the operation that effluxes air simultaneously.
In above syringe construction, the sealing that is connected of needle stand 2 and syringe 1 is to utilize the elastic characteristic of elastic supporting seat 4 itself to realize, respectively by flange connector 41 and the sealing of needle stand connecting hole bottom snap flange 221 and the sealing of elastic supporting seat umbrella body 42 peripheries and syringe endoporus 22, whole syringe has been removed " O " type coil structures, reduced accessory, simplified installation step, can promote the efficiency of assembling of syringe to a certain extent, reduced production costs.
In use, at first carry out emptying gas operation, will push away before the core bar 3 until 0 liquid level face of plug 32 and elastic supporting seat umbrella body 42 downsides touches mutually and do not push elastic supporting seat 4, its structure as shown in Figure 1.Pumpback core bar 3 carries out the drawing liquid operation afterwards, and its structure pushes away core bar 3 before getting final product and carries out injection operation as shown in Figure 6 after drawing liquid is finished, finish injection when core bar 3 top cement plugs 32 touch mutually with 0 liquid level face again, and its structure as shown in Figure 7.Push away core bar 3 extruding elastic supporting seats 4 before continuing afterwards, the flange connector 41 that makes elastic supporting seat 4 breaks away from and enters into the connecting hole 22 of needle stand from needle stand snap flange 221, its structure as shown in Figure 8, this moment, the outer extruding force at needle stand snap flange 221 places disappeared, withdrawal is multiple and break away from draw-in groove 111 on the syringe 1 in needle stand 2 outer walls, removes the constraint between needle stand 2 and the syringe 1.Continue to advance core bar 3 that elastic supporting seat 4 compressions are shortened afterwards, this process passes completely through grab connecting hole 43 and engages with the top of elastic supporting seat 4 up to the grab 33 of core bar 3 heads, its structure as shown in Figure 9, the core bar 3 of pulling back afterwards, can drive elastic supporting seat 4 bounces back synchronously with needle stand 2 relative syringes 1, its structure as shown in figure 10, until till the needle point on the needle stand 2 is reduced in the syringe 1 in fully.
To sum up, this utility model has designed a kind of novel safety injector, it can thoroughly solve the syringe that causes because of maloperation and shift to an earlier date the self-destruction problem, made things convenient for operation, remove " O " type circle of sealing usefulness simultaneously, reduced accessory, simplified installation step, can promote the efficiency of assembling of syringe to a certain extent, reduce production costs.
The above, it only is preferred embodiments of the present utility model, be not that utility model is done any pro forma restriction, every foundation know-why of the present utility model still belongs in the scope of technical solutions of the utility model any simple modification, equivalent variations or modification that above embodiment does.
Claims (5)
1. novel safety injector, comprise syringe, needle stand and core bar, it is characterized in that: described needle stand is positioned at the endoporus front end of syringe by an elastic supporting seat, and the endoporus bottom of needle stand is provided with wide-aperture connecting hole, and connecting hole convexes into a snap flange in the bottom; The head evagination of described elastic supporting seat forms a flange connector, flange connector snap in the snap flange of needle stand connecting hole bottom in interference tight fit mode and make needle stand the outer wall expansion and with syringe on the draw-in groove engagement connection; The afterbody abduction of elastic supporting seat forms a umbrella body and is sealed and matched with the syringe endoporus and is connected.
2. safety injector as claimed in claim 1, it is characterized in that: described elastic supporting seat center is provided with the grab connecting hole of up/down perforation, the grab length that the degree of depth of grab connecting hole is stretched out greater than the core bar head under the original state, the plug on the described core bar or core bar head can be with pushing away before the core bar and elastic supporting seat crimp is shortened and made the grab of core bar head pass whole grab connecting hole and engage with the top of elastic supporting seat.
3. safety injector as claimed in claim 1 or 2, it is characterized in that: the downside of described elastic supporting seat umbrella body is 0 liquid level face, this 0 liquid level face matches with the plug front end face of core bar or the front end face of core bar head.
4. safety injector as claimed in claim 1 or 2, it is characterized in that: the external diameter of the flange connector of described elastic supporting seat is less than the internal diameter of needle stand connecting hole, and the height of flange connector is not more than the length of connecting hole.
5. safety injector as claimed in claim 1 or 2, it is characterized in that: the outer wall of described elastic supporting seat or grab connecting hole inwall or above two positions are provided with some gap slots that can increase the elastic supporting seat deflection simultaneously.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320220218 CN203169742U (en) | 2013-04-27 | 2013-04-27 | Novel safety syringe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320220218 CN203169742U (en) | 2013-04-27 | 2013-04-27 | Novel safety syringe |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203169742U true CN203169742U (en) | 2013-09-04 |
Family
ID=49066499
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320220218 Expired - Fee Related CN203169742U (en) | 2013-04-27 | 2013-04-27 | Novel safety syringe |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203169742U (en) |
-
2013
- 2013-04-27 CN CN 201320220218 patent/CN203169742U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130904 Termination date: 20190427 |